<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
    <title>Document</title>
</head>
<body>
   <div id="app">
    <input type="checkbox" value="zs" v-model="checked1"/>zs
    <input type="checkbox" value="ls" v-model="checked1"/>ls
    {{checked1}}
   </div>

   <script>
       let vue =  new Vue({
           
          el:"#app",
          data () {
              return {
                checked:true,
                checked1:[]
              }
          },
          methods: {
              
          }
       })
   </script>
</body>
</html>